Improvement in bolster-plates for vehicles



I. LEWIS.

w. Bolster- Plate for Vehicles.

'Paitented Man-n30, 1825.

I d Fig. 5'.

WITNESSES W60 dfiiin.

' THE GRAPHIC CO.PHOTOv-L|TH.39B;41 PARK PLAGE,N-Y-

WILLIAM J. LEWIS, OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN BOLSTER-PLATES FOR VEHICLES.

Specification forming part of Letters Patent No. 161,344, dated March30, 1875; application filed February 20, 1875.

To all whom it may concern:

Be it known that I, VVILLIAM J. LEWIS, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a new and usefulImprovement in Bolster-Plates; and I do hereby declare the following tobe a full, clear, and exact description thereof, reference being had tothe accompanying drawing, forming a part of this specification, in

which- Figure 1 is a plan view of my improved bolster-plate. Fig. 2 is across-section through 00 as, Fig. 1; and Fig. 3 is a longitudinalvertical section of a pair of bolster-plates, showing their relativepositions when in place on a wagon.

Like letters of reference indicate like parts in each.

My invention consists of a bolsterplate having a raised or male ring onone side, and a correspondin g or female ring on the opposite side, sothat such plate shall serve either as a male or female bolster-plate.

To enable others skilled in the art to make and use my invention, I willdescribe it more fully.

The plate a is provided with a hole, I), for

the king-bolt, around which I form, on one side, a raised or male ring,0, and on the opposite side a sunken or female ring, (Z. This plate maybe made by rolling the iron out into bars of the requisite width andthickness, and cutting the same into the desired lengths. Then, by meansof suitable (lies, the ring 0 01 may be stamped in the blank.

The ring and depression are so made that the metal forced in to make thedepression or seat on one side is forced out to make the ring 0 on theother side.

If two of these plates are placed together, as shown in Fig. 3, theyform a perfect set.

This plate is reversible, and may be used either as a male or femaleplate. It is fitted with screw-holes e, as usual.

YVhat I claim as my invention, and desire to secure by Letters Patent,is

As a new article of manufacture, a bolsterplate having a raised ring onone face, and a corresponding depression on the opposite face, so thatsuch plate shall serve either as an upper or lower bolster-plate, whenused with a Second plate of the same form, substantially as described.

In testimony whereof I, the said WILLIAM J. LEWIS, have hereunto set myhand.

T. B. KERR, JAMES I. KAY.

